Antivitamin
Definition
A chemical substance or organic compound with a molecular structure similar to a vitamin, capable of blocking, competing with, or completely nullifying its specific biological and metabolic effects. Antivitamins most frequently act through competitive inhibition, occupying the active site of an enzyme or preventing normal intestinal absorption, being utilized experimentally in the laboratory or in therapy (such as methotrexate, an antifolate antivitamin used as a cytostatic).
Bilingual Equivalents
- Antivitamin
- Vitamin antagonist
Grammatical & Source Details
| Inflection Type | Feminine noun, regular declension with standard structural plural mutations in Romanian syntax. |
| Formation | Derived through biochemical prefixation, combining the oppositional modifier 'anti-' with the organic noun 'vitamină'. |
| Spelling / Pronunciation | [an.ti.vi.ta.ˈmi.nə] |
| Source | The Merck Index and International Glossary of Biochemical and Nutritional Terms |
Contextual Usage Examples
RO: Prezența unei antivitamine în alimentele crude poate provoca o stare severă de avitaminoză în ciuda unei diete variate.
EN: The presence of an antivitamin in raw foods can cause a severe state of avitaminosis despite a varied diet.
RO: Avidina din albușul de ou crud funcționează ca o antivitamină, blocând legarea și utilizarea biotiniei de către organism.
EN: Avidin in raw egg white functions as an antivitamin, blocking the binding and utilization of biotin by the body.
RO: Cercetătorul a analizat structura acestei noi antivitamine sintetice destinate inhibării celulelor tumorale.
EN: The researcher analyzed the structure of this new synthetic antivivamin designed to inhibit tumor cells.
Idioms & Phrases
Antivitamină K / Antivitamin K
RO: Compus farmaceutic anticoagulant (precum warfarina) care blochează ciclarea normală a vitaminei K, reducând sinteza factorilor de coagulare.
EN: An anticoagulant pharmaceutical compound (such as warfarin) that blocks the normal cycling of vitamin K, reducing clotting factor synthesis.
Inhibiție prin antivitamine / Antivitamin inhibition
RO: Proces biochimic prin care un antagonist ocupă receptorii celulari, oprind derularea unei reacții enzimatice vitale.
EN: A biochemical process whereby an antagonist occupies cellular receptors, arresting the unfolding of a vital enzymatic reaction.
Efect de antivitamină naturală / Natural antivitamin effect
RO: Proprietate înnăscută a unor compuși prezenți în plante de a degrada sau inactiva substanțele nutritive în timpul digestiei.
EN: An innate property of certain compounds present in plants to degrade or inactivate nutrients during digestion.
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